chapter 3 - stoichiometry + combustion of fuels

Question 1

properties of gases

Answer 1

• density
  low
• volume and shape
  fill shape due to moving independently
• compressibility
  easily due to space
• ability to mix
  mix rapidly

Question 2

kinetic molecular theory

Answer 2

model to explain gas behaviour based on particle behaviour
- volume mostly taken up by empty space
- move rapidly in random, straight motion and colliding
- weak intermolecular forces
- collision = no loss of energy by transfer

Question 3

GE of kinetic energy

Answer 3

KE = 1/2 mv^2
m - mass
v - velocity

Question 4

pressure

Answer 4

P = F/A
the force exerted on a unit area of a surface by the particles of a gas as they collide with the surface
partial pressure - the pressure exerted by a single gas in a mixture
total pressure - sum of individual partial pressure of each gas

Question 5

universal gas equation

Answer 5

PV = nRT
P - pressure (kPa)
V - volume (L)
n - amount (mol)
R - 8.31 J K^-1 mol^-1
T - temp (kelvin) T= t + 273

Question 6

molar volume of gas Vm

Answer 6

n = V/Vm
volume of 1 mol of gas when at SLC
(T = 25C - 298 k, P= 100 kPa, Vm = 24.8 L mol^-1)